AK8998 Datasheet, PDF (39/59 Pages) Asahi Kasei Microsystems – Preliminary

[AK8998/W/D]
4) Serial Interface Timing Diagram
4.1) Timing chart 1
[EEPROM WRITE Mode]
Twr_EEP
1
4
9
16
1
CSCLK
VOUT
Analog
Output
I2 I1 I0 A4 A3 A2 A1 A0 D7
D0
I2
[EEPROM READ Mode]
1
9
CSCLK
VOUT
Analog
Output
Hi-Z
I2 I1 I0 A4 A3 ^A2 A1 ^A0 D7
[Register READ Mode]
1
9
CSCLK
VOUT
Digital
I/O
Hi-Z
I2 I1 I0 A4 A3 ^A2 A1 ^A0 D7
16
1
4
Hi-Z
D0 I2 I1 I0 A4 A3 A2
16
1
4
Hi-Z
D0 I2 I1 I0 A4 A3 A2
4.2) Timing chart 2
[Register Write Mode1]
VREF / IREF / VTMP / Pressure Level /Pressure Hysteresis Level / S/H error Adjustment set
Twr_REG CSCLK High Time
CSCLK
VOUT
Analog
Output
1
4
9
I2 I1 I0 A4 A3 A2 A1 A0 D7
4.3) Timing chart 3
[Register Write Mode2]
OSC Adjustment set
16
1
Hi-z
D0
Voltage Monitor (note) I2
(note)
VREF / IREF / VTMP /
Pressure Level / S/H error
Pressure Hysteresis Level
Twr_REG
Tcount
1
4
9
16
1
CSCLK
VOUT
Analog
Output
I2 I1 I0 A4 A3 A2 A1 A0 D7
D0
I2
MSxxxxx-E-00
- 36 -
2011/12